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Pegasus H

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Pegasus
Credit: Orbital Sciences Corporation

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Status: Retired 2000. First Launch: 1995-04-03. Last Launch: 2000-10-09. Number: 4 . Payload: 350 kg (770 lb). Thrust: 580.00 kN (130,380 lbf). Gross mass: 18,500 kg (40,700 lb). Height: 15.50 m (50.80 ft). Diameter: 1.28 m (4.19 ft). Apogee: 4,000 km (2,400 mi).

LEO Payload: 350 kg (770 lb).

• Orbcomm F1 - . Payload: Orbcomm s/n FM1. Mass: 40 kg (88 lb). Nation: USA. Agency: Orbcomm. Program: Orbcomm. Class: Communications. Type: Civilian communications satellite. Spacecraft: Microstar. USAF Sat Cat: 23545 . COSPAR: 1995-017A. Apogee: 747 km (464 mi). Perigee: 728 km (452 mi). Inclination: 69.98 deg. Period: 99.56 min. Commercial communications testbed. Plane F. Ascending node 199.1 degrees. Air dropped in Point Arguello WADZ..

• Orbview-1 - . Payload: Microlab 1. Mass: 74 kg (163 lb). Nation: USA. Agency: Orbimage. Program: Orbview. Class: Earth. Type: Atmosphere satellite. Spacecraft: Microstar. USAF Sat Cat: 23547 . COSPAR: 1995-017C. Apogee: 747 km (464 mi). Perigee: 733 km (455 mi). Inclination: 70.00 deg. Period: 99.60 min. Lightning mapper; GPS radio occultation. Air dropped in Point Arguello WADZ..

• Orbcomm F2 - . Payload: Orbcomm s/n FM2. Mass: 40 kg (88 lb). Nation: USA. Agency: Orbcomm. Program: Orbcomm. Class: Communications. Type: Civilian communications satellite. Spacecraft: Microstar. USAF Sat Cat: 23546 . COSPAR: 1995-017B. Apogee: 747 km (464 mi). Perigee: 728 km (452 mi). Inclination: 69.98 deg. Period: 99.56 min. Commercial communications testbed. Plane F. Ascending node 198.5 degrees. Air dropped in Point Arguello WADZ..

• MSTI-3 - . Payload: MSTI 3. Mass: 170 kg (370 lb). Nation: USA. Agency: BMDO. Class: Military. Type: Strategic defense satellite. Spacecraft Bus: SA-200. Spacecraft: MSTI. Decay Date: 1997-12-11 . USAF Sat Cat: 23868 . COSPAR: 1996-031A. Apogee: 432 km (268 mi). Perigee: 420 km (260 mi). Inclination: 97.10 deg. Period: 90.70 min. LEO. Sensor technology tests Air dropped in Point Arguello WADZ..

• SCD-2 - . Mass: 110 kg (240 lb). Nation: Brazil. Agency: McLean. Manufacturer: INPE. Class: Communications. Type: Civilian communications satellite. Spacecraft: SCD. USAF Sat Cat: 25504 . COSPAR: 1998-060A. Apogee: 760 km (470 mi). Perigee: 736 km (457 mi). Inclination: 25.00 deg. Period: 99.80 min.

  Brazil's SCD-2 satellite was aboard Orbital Science's L-1011 Stargazer aircraft when it took off from the Cape Canaveral Air Station's Skid Strip (Runway 02/20, 28.2N 80.6W) at 23:05 GMT on Oct 22 and flew to the drop zone near Cape Canaveral (in the Mayport, Florida, Warning Area) at 29.0N 78.3W. The Pegasus ignited 5 seconds after drop. The first stage carried a NASA experiment attached to its right wing, to study hypersonic boundary layer separation. The 115 kg Satelite de Coleta de Dados (Data Collection Satellite) relays data from environmental monitoring stations. Air dropped in Mayport DZ.

• HETE-2 - . Mass: 130 kg (280 lb). Nation: USA. Agency: NASA Greenbelt. Manufacturer: MIT. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: HETE. USAF Sat Cat: 26561 . COSPAR: 2000-061A. Apogee: 641 km (399 mi). Perigee: 598 km (372 mi). Inclination: 1.95 deg. Period: 97.02 min.

  First orbital launch from Kwajalein. Second High Energy Transient Explorer; built by MIT using leftover parts from the first HETE. This failed to operate because of a Pegasus adapter failure during launch in November 1996. MIT operates the satellite, while the program is managed by NASA GSFC as an Explorer mission of opportunity. HETE's main instrument is FREGATE, the French Gamma Telescope, a hard X-ray spectrometer operating in the 6 to 400 keV energy range. This gamma ray burst detector, together with a Wide Field X-ray Monitor hard X-ray coded mask telescope, is used to trigger searches with the two Soft X-ray Imagers which have 33-arcsecond spatial resolution. This will let astronomers get precise locations for gamma-ray bursts, allowing detailed follow-up with optical instruments. The satellite is in a 595 x 636 km x 2.0 deg equatorial orbit, and sends data to a network of small ground terminals spaced around the equator. Air dropped in Kwajalein DZ.